diff --git a/content/en/docs/setup/upgrade/in-place/index.md b/content/en/docs/setup/upgrade/in-place/index.md index bfa3e2f8b2..29965a6407 100644 --- a/content/en/docs/setup/upgrade/in-place/index.md +++ b/content/en/docs/setup/upgrade/in-place/index.md @@ -59,10 +59,9 @@ can be found in the `bin/` subdirectory of the downloaded package. then you must provide the same `-f` flag value to the `istioctl upgrade` command. {{< /warning >}} - `istioctl upgrade` does not support the `--set` flag. Therefore, if you - installed Istio using the `--set` command, create a configuration file with - the equivalent configuration options and pass it to the `istioctl upgrade` - command using the `-f` flag instead. + If you installed Istio using `--set` flags, ensure that you pass the same `--set` flags to upgrade, + otherwise the customizations done with `--set` will be reverted. For production use, the use of a + configuration file instead of `--set` is recommended. If you omit the `-f` flag, Istio upgrades using the default profile.